JP3178279U - Slide down device - Google Patents

Abstract

To provide a slide-down device capable of safely and quickly lowering a heavy concrete block cut from a concrete structure or the like.
[Solution] It consists of four telescopic columns 2 having wheels 22 at the base, and a stage 1 that can be moved up and down along these four columns. Thus, a guide hole 10 for guiding the vertical movement of the stage 1 is provided. Anchor plates 25 and 26 for fixing the column 2 are fixed to the tip and base of the column 2, and fixtures 13 and 28 for fixing the chain block are formed on the stage 1 and the anchor plate 26 at the column tip. The column 2 is fixed by the anchor plates 25 and 26, and the stage 1 is lowered along the column 2 by the chain block.
[Selection] Figure 1

Description

  The present invention relates to a slide-down device for a slide-down method for lowering a concrete block cut from a concrete structure such as a subway tunnel wall, pillar, abutment, retaining wall, or concrete dam to a safe work surface.

  Conventionally, a concrete block that has been cut from a reinforced concrete structure and separated from the structure has been pulled out by, for example, a chain block or moved laterally to lower the concrete block to a work surface such as a foundation surface or a floor surface. There were many serious accidents such as lack of safety and injury of workers due to falling concrete blocks, and a means to safely drop the cut concrete blocks was desired.

JP 2011-105474 A Japanese Patent Laid-Open No. 9-4239

  The present invention allows a concrete block having a large weight to be lowered safely and quickly.

  The present invention consists of a telescopic column arranged in a quadrangle with wheels at the base, and a stage that can move up and down along these columns. The stage is accommodated in the four corners to guide the vertical movement of the stage. A guide hole is provided, an anchor plate for fixing the column is provided at the tip and base of the column, and a fixture for fixing the chain block is formed on the stage and the anchor plate at the tip of the column. Down device.

According to the present invention, the column and the stage are separated and carried into the work site, and the assembly is performed for installation. Therefore, the work can be carried into a narrow work site and assembled. Moreover, since the concrete block cut | disconnected on the stage can be mounted | worn and it can descend | fall safely and rapidly by operation of a chain block, work efficiency can be improved markedly.
Since the work is performed by fixing the pillars to the floor and ceiling with anchors, the pillars do not fall down during the concrete block lowering work, and it is safe.
Furthermore, since the wheel is provided at the base of the column, it is easy to move the assembled slide-down device of the present invention, so that work efficiency can be improved.

The front view of the slide-down apparatus of this invention. The side view of the slide down apparatus of this invention. The top view of the stage of the slide down apparatus of this invention. The side view of the slide down apparatus of the state which lowered | hung the stage.

The present invention will be described based on an embodiment shown in the drawings.
As shown in FIG. 1, the slide-down device includes a stage 1 on which the cut concrete block B is placed and four pillars 2 arranged in a quadrangle as a guide for safely lowering the stage 1.
The stage 1 is for placing a heavy concrete block B and lowering it. The stage 1 is a quadrangle having a cross section that can withstand the weight. Guide holes 10 that can accommodate the pillars 2 are formed at the four corners. A sleeve 12 having the same diameter as that of the guide hole 10 protrudes above the stage 1 so that the stage 1 can be lowered and slid along the column 2 stably. Is provided with a fixture 13 for connecting the chain 31 of the chain block 3.

  An anchor plate 25 is provided at the base of the column 2 so that the column 2 can be fixed to the floor surface with anchor bolts, and the load received by the column 2 is distributed and transmitted to the floor and the column 2 is overturned. Is preventing. A wheel 22 for movement is provided at the base of the column 2 so that the stage 1 and the column 2 can be moved in an assembled state. The wheel 22 is rotatably attached to a shaft 23 fixed inside the pillar 2, and is attached to the inside of the pillar 2 or both sides of the pillar 2. Moreover, you may enable it to move to arbitrary directions by using the wheel 22 as a caster.

Since the height of the pillar 2 varies between the floor and the ceiling of the concrete structure, the pillar 2 can be expanded and contracted so that this can be accommodated. For example, it can be expanded and contracted using a mechanical type such as a screw or hydraulic pressure.
An upper anchor plate 26 is provided at the distal end of the telescopic member 21 at the distal end of the column, and like the base anchor plate 25, it can be fixed to the ceiling with an anchor bolt or the like. The upper anchor plate 26 may be connected by a hinge or a pivot so that the angle of the upper anchor plate 26 is changed, and the column 2 can be fixed even on an inclined ceiling.

  The anchor plate 26 is provided with an upper fixture 28 for connecting the chain block 3. The chain block 3 is connected to the upper fixture 28 and suspended, and the chain 31 of the chain block 3 is attached to the stage 1. The stage 13 is moved up and down along the column 2 by connecting to the fixture 13 and operating the chain block 3.

Next, the assembly and use procedures of this apparatus will be described.
The stage 1 and the pillar 2 are brought into the site, the pillars 2 are respectively installed in the guide holes 10 at the four corners of the stage 1, and the stretchable member 21 of the pillar 2 is extended until it touches the ceiling.
The pillars 2 are fixed by fixing the anchor plates 25 and 26 of the base and the ceiling to the floor and the ceiling with anchor bolts, respectively.

The chain block 3 is suspended from the upper fixture 28 of each upper anchor plate 26, one end of the chain 31 is connected to the fixture 13 of the stage 1, and the stage 1 extends along the pillar 2 using all the chain blocks 3. Confirm that it moves up and down horizontally.
In order to lower the concrete block B cut from the concrete structure onto the floor surface, the chain block 3 is operated to raise the stage 1 and wait. The cut concrete block B is placed on the stage 1 and the chain block 3 is operated and slowly lowered to the floor.

When the stage 1 reaches the floor surface, the carriage is placed on the stage, the concrete block B on the stage 1 is moved laterally, placed on the carriage, and carried away.
As described above, the concrete block B can be safely lowered by using the slide-down device of the present invention. Moreover, since the wheel 22 is attached, it is easy to move the slide-down device to another place.

1 Stage 10 Guide hole 12 Sleeve 2 Pillar 3 Chain block

Claims (3)

It consists of telescopic columns with wheels at the base and stages that can move up and down along these columns, and there are guide holes at the four corners of this stage to accommodate the columns and guide the vertical movement of the stage, A slide-down device in which an anchor plate for fixing a column is fixed to an extensible part and a base part at the tip of the column, and a fixture for fixing a chain block is formed on the stage and the anchor plate at the tip of the column. 2. The slide-down device according to claim 1, wherein the upper anchor plate is attached so as to be inclined with respect to the column. 2. The slide-down device according to claim 1, wherein a sleeve for guiding the column is provided in the guide hole of the stage.

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